CleanAddressList, UpdateObserverList and GetAllObserverMappersForAddress should add a break in their loop.
https://github.com/code-423n4/2023-11-zetachain/blob/main/repos/node/x/observer/keeper/hooks.go#L138-L149
https://github.com/code-423n4/2023-11-zetachain/blob/main/repos/node/x/observer/keeper/msg_server_update_observer.go#L94-L100
https://github.com/code-423n4/2023-11-zetachain/blob/main/repos/node/x/observer/keeper/observer_mapper.go#L66-L84
